NA-05 - Cleaning: Cleaning Strategy and Programme

- Back to outline
- Back to Modules

Fundamentals
Cleaning measures
Development of the cleaning plan
Cleaning strategy
Optimization of the cleaning effort
Determination of cleaning intervals
Summary

Determination of cleaning intervals

Optimization of the operating parameters: Example high-pressure cleaning – Time distribution

Time distribution of high-pressure cleaning

Image:

Limits of variations of required time for operations during sewer cleaning (8-h-day) [Orth2008]

Orth2008

Orth, H.; Lange, R.-L.; Pahl, A.; Meßmann, S.: Abschluss¬bericht des Forschungsvorhabens „Zustands-, Prozess- und Wirkungsanalyse zur Entwicklung einer bedarforien¬tierten Reinigungsstrategie für Kanalnetze“, gefördert durch: Ministerium für Umwelt und Naturschutz, Landwirtschaft und Verbraucherschutz des Landes NRW Verfasser: Lehrstuhl für Siedlungswasserwirtschaft und Umwelttechnik, Ruhr-Universität Bochum, Bochum (12.2008).

Image:

Time required for operations during sewer cleaning (8-h-day) in percent [Orth2008]

Orth2008

/ 91

Research from the Ruhr University in Bochum, Germany concerning this matter showed that only about half of the estimated working time was available for the cleaning of sections and shafts on site. One third of the working time was used for tooling and traveling. Especially in the case of cleaning vehicles without a water recovery tank the refilling of the flushing water took up a high share of the tooling time. Approximately 12 % of the working time was used for traveling between cleaning locations and the depot [Orth2008].